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प्रश्न
Fill in the blank
A ________ substance has only one kind of matter.
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उत्तर
A pure substance has only one kind of matter.
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संबंधित प्रश्न
Fill in the blanks.
Immiscible liquids are separated by using a ________.
Name two methods by which solid-solid mixtures can be separated.
Fill in the blank
Clay is separated from water by the method called ______
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Chalk powder from water
State any one method – to separate the following mixtures – A solid-liquid mixture containing – a soluble solids in the liquid component
Explain with diagram the process used to – separate the following substance from the given mixtures - Iron from a mixture of – iron & copper
Give a reason for the following statement :
Zinc is considered an element, while zinc sulphide is considered a compound.
Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water, and coins. Draw a flow chart to show the separation process.
Name the apparatus that you will use to separate the components of mixtures containing two,
- miscible liquids,
- immiscible liquids
Match the mixtures in column I with their method of separation in column II.
| COLUMN I | COLUMN II | ||
| (a) | Oil mixed in water | (i) | Sieving |
| (b) | Iron powder mixed with flour | (ii) | Hand picking |
| (c) | Salt mixed with water | (iii) | Decantation |
| (d) | Lady’s finger mixed with french beans | (iv) | Magnet |
| (e) | Rice flour mixed with kidney beans | (v) | Evaporation |
